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38 systems engineer principal jobs found

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Security Clearance systems engineer principal
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SAIC
Mar 11, 2026
Risk Systems Engineer Principal
SAIC CA
Description Job Description: SAIC is seeking experienced risk, issue and opportunity management lead to join our MSEIT team. You will join a systems engineering team defining the next generation of space communication systems supporting US Space Force (USSF) satellite communications. You will support Systems Engineering & Integration (SE&I) activities in a multidisciplinary and collaborative environment. You will interface and collaborate with SE&I team members, contractors, government civilians and members of the USSF. You will lead and support several working groups responsible for leading technical discussion, resolve and identify risk, requirement gaps, developing briefings, writing, and tracking action items, and authoring meeting minutes. The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge Systems Engineering & Integration (SE&I) for the US Space Force's Space Systems Center (SSC). We support the...
General Dynamics Mission Systems, Inc
Mar 14, 2026
Lead Engineer - NGC Core (Sr Principal Systems Engineer)
General Dynamics Mission Systems, Inc Orlando, FL, USA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 10+ years of job-related experience, or a Master's degree plus 8 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire.  Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES:   Required 10+ years of experience in software-intensive program leadership, with demonstrated ability to lead large, multi-discipline technical teams Proven track record of delivering complex software programs on schedule...
SAIC
Mar 11, 2026
Principal Systems Engineer
SAIC UT
Description SAIC is seeking an exceptional Principal Systems Engineer to provide critical interface management and integration support to one of the Department of Defense's most complex and vital acquisition efforts - the Sentinel Intercontinental Ballistic Missile (ICBM) Program. This position offers a unique opportunity to contribute to the modernization of the U.S. Air Force's land-based strategic deterrent, ensuring its operational readiness and sustainability well into the 21st century. This position is located at Hill AFB, UT. The Sentinel ICBM Program, formerly known as the Ground Based Strategic Deterrent (GBSD), is a massive, multi-faceted initiative to replace the aging LGM-30G Minuteman III weapon system. This career-defining program involves designing and integrating advanced ballistic missile systems, refurbishing or replacing key infrastructure, and fielding state-of-the-art command, control, and support systems. As a Senior Systems Engineer, you will provide...
SAIC
Mar 11, 2026
Systems Engineer Sr Principal
SAIC VA
Description Join a winning team! Be part of a dynamic team that delivers excellence and quality for the NRO's Systems Engineering Directorate (SED). SAIC is seeking to fill an opening for a Space Enterprise System Engineer to provide Systems Engineering and Technical Assistance (SETA) services to an IC customer. The customer organization we support provides the system enterprise architecting, analysis, and system of systems engineering solutions that determine the current and future national space systems. Make a difference in securing our nation's security through quality engineering and innovation. Responsibilities include but are not limited to: Coordinating and supporting enterprise requirements, CONOPS, and architectures in various domains; supporting enterprise and system level requirements development for future systems; overseeing the allocation and closure of acquisition-level requirements with developers; participation in readiness events in support of...
Lockheed Martin
Mar 13, 2026
Range Document Integrator
Lockheed Martin Cape Canaveral, FL, USA
Description: At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Fleet Ballistic Missiles (FBM) is one of Lockheed Martin’s outstanding Lines of Businesses that prioritizes partnership, integrity, and reliability. The Life Extension 2 (LE2) team is an organization within the greater FBM program which supports the development of the Next Generation System by developing concepts, researching, and maturing technologies to support the...
SAIC
Mar 11, 2026
Senior Software Engineer
SAIC AL
Description SAIC is seeking a Principal Software Engineer to contribute advanced technical expertise to the complete rewrite of the Interoperability Engineering System (IES) in Huntsville, AL . IES is a desktop application used by the U.S. Army for Link 16 scenario generation, scripting, and data analysis. This role focuses on designing, developing, and implementing a modern, scalable software solution from scratch. The Principal Software Developer will apply deep knowledge of software engineering principles to create high-quality, efficient, and maintainable code. You will work closely with an Agile team to collaborate on innovative solutions and deliver a robust application. Responsibilities: Design and develop a new software architecture to replace the existing IES application using best practices and modern tools. Develop high-performance desktop application features using C++, C#, .NET, and WPF. Collaborate with the Agile development team and...
SAIC
Mar 11, 2026
Information System Security Engineer
SAIC VA
Description SAIC is seeking an Information System Security Engineer (ISSE) to provide information security support. This position is in McLean, VA and requires an active TS/SCI clearance with Polygraph . This Customer's office is the force of choice for the development of global infrastructure and delivery of solutions that drive influence operations. If you have specialized skills in information security and tech ops, this is the role for you. Job responsibilities include, but are not limited to: Support the Lifecycle Assessment and Authorization (A&A) process. Develop a Systems Security Plan (SSP). Assist and maintain a formal Information Security Program that includes recommendations on continuous improvement of the processes and architectures. Maintain and make accessible documentation of all operational and business process activities in the form of Standard Operating Procedures (SOPs). Monitor and track projects in the A&A queue....
SAIC
Mar 11, 2026
Cyber Engineer Principal
SAIC VA
Description SAIC is seeking a Principal Cybersecurity Engineer to support the AOC Weapons System Falconer Program, and compliant configuration, sustainment, and troubleshooting of mission-critical Command and Control (C2) systems across various Air Operations Centers (AOCs) worldwide. Roles and Responsibilities: Support AOC Weapons System Falconer Program: Provide cybersecurity support for the Air Operations Center (AOC) Weapons System Falconer Program, ensuring mission readiness and operational effectiveness. Compliance and Configuration: Perform compliant configuration of mission-critical Command and Control (C2) systems, adhering to established cybersecurity policies, standards, and best practices. System Sustainment: Sustain and maintain the ongoing functionality and security of C2 systems across various Air Operations Centers (AOCs) worldwide, ensuring continuous operational availability. Troubleshooting and Maintenance: Identify, diagnose,...
SAIC
Mar 11, 2026
Principal Test Engineer
SAIC UT
Description SAIC is seeking an experienced Principal Test Engineer to join our team in support of BAE Systems on the Air Force's Sentinel Program at Hill Air Force Base, Utah. This role supports the acquisition, development, and testing of the next-generation Intercontinental Ballistic Missile (ICBM) weapon system for Sentinel one of the most significant national security priorities. As part of the Integration Support Contract (ISC) team, you will collaborate closely with multidisciplinary teams, prime contractors, and government stakeholders. This is a unique opportunity to lead developmental and operational testing efforts in one of the nation's most important programs. Technical Responsibilities: Develop and validate test strategies and documentation that align with Department of Defense (DoD) and U.S. Air Force (USAF) requirements. Collaborate with range safety teams and support flight test readiness for the Sentinel weapon system. Conduct ground and...
SAIC
Mar 11, 2026
Principal Electrical Engineer
SAIC IN
Description SAIC is seeking a Principal Electrical Engineer in Indianapolis, IN. JOB DESCRIPTION: Researches, designs, develops, modifies, evaluates and tests a variety of electronic equipment and systems, including radar and radiation detection equipment; radio, television and other communications equipment and systems; circuitry components; analog and digital computers; and control and test equipment. Conducts experimental tests on equipment and evaluates results. Develops specifications for selecting components and equipment to use. May also review vendors' abilities to support development. SCOPE: Applies extensive technical expertise and has full knowledge of other related disciplines. Receives assignments in the form of objectives and establishes goals to meet objectives. Provides guidance to subordinates to achieve goals in accordance with established policies. Work is reviewed and measured based on meeting objectives and...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Sr Principal Engineering Support Specialist
General Dynamics Mission Systems, Inc Pittsfield, MA, USA
Basic Qualifications Requires a Bachelor’s or Technology degree in Engineering or a related specialized area/field, or equivalent (4 years job-related experience). Requires an additional 10+ years of job-related experience, or a Master's degree with 8+ years of job-related experience. CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Ready to be a leader with the company that is committed to pushing the limits of truly advanced technologies? At General Dynamics Mission Systems, we create the products and services that help our service members, intelligence analysts...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Sr Advanced Software Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Software Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Key Responsibilities: Serve as principal technical authority and strategic leader for SLCM-N software architecture and development Define and drive technical vision, architectural standards, and long-term roadmaps for complex weapon system software Lead development...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Sr Advanced Systems Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Key Responsibilities: Serve as principal technical authority for systems engineering on payload systems program, providing strategic direction and vision Define and drive systems engineering strategy, architectural standards, and technical roadmaps that align with...
Lockheed Martin
Jan 14, 2026
Cyber Software Engineer Sr Stf – DSP
Lockheed Martin Fort Meade, MD, USA
Description: This position is participating in our External Referral Program. If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you'll receive a $3000 payment! code-extrefer This position may be eligible for up to $25K sign on bonus for external hires! Cyber Software Engineer Principal - DSP Digital Signal Processing What We’re Doing: Lockheed Martin, Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the evolving threat of cyber warfare. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. Cyber | Lockheed Martin The Work: The GG...
SAIC
Mar 11, 2026
Senior Radio Communication Engineer
SAIC VA
Description SAIC is seeking a Senior Communications Engineer to join our team in support of the Air Operations Center Weapons System (AOC WS) Falconer Program. The position is located at the USAF customer site in Hampton, VA, and reports to the Fielding, Logistics, and Site Support Team (FLSST) IPT Lead. Position can require extensive travel to AOC site worldwide. This position requires a demonstrated understanding and application of Radio Frequency (RF) and configuration management principals and process, mission planning/scheduling along with experience in installation, upgrade, and sustainment of existing AOC Radio / Datalink baseline. The successful candidate will be effective at face-to-face interaction with customers and other contractors to respond to requests for information, support to technical meetings, technical interchanges and enterprise working groups. The candidate must be able to work independently and represent the program and SAIC at meetings and working...
Lockheed Martin
Mar 10, 2026
MAS (SAINT) Task Order 3 Staff SW Engineer / Embedded/C++ /Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: This position is responsible for all phases of the software development lifecycle including requirements analysis, design, code and unit test, and hardware/software integration and verification. The individual will develop embedded software in C++ and embedded operating system in an Agile environment using JIRA, Git and Confluence. The individual will need to apply appropriate standards, processes, procedures and tools throughout the development lifecycle. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries....
Lockheed Martin
Mar 10, 2026
NGSRI Software Engineer - Senior / Embedded / C++ - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: You will be a Sr. Software Engineer on our team at Lockheed Martin. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. What You Will Be Doing As a Sr. Software Engineer, your responsibilities...
Lockheed Martin
Mar 10, 2026
JASSM UI Software Engineer, Senior / C++ - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: You will be a Sr. Software Engineer on our team at Lockheed Martin. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. What You Will Be Doing As a Sr. Software Engineer, your responsibilities...
Lockheed Martin
Mar 06, 2026
Software Engineer Senior - Embedded, Dallas, TX
Lockheed Martin Grand Prairie, TX, USA
Description: Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. As a Software Engineer at MFC, you will join one of the largest networks of software professionals, implementing cutting edge technologies on both...
Lockheed Martin
Mar 04, 2026
Embedded Software Engineer - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. What You Will Be Doing As a Software Engineer, your responsibilities will include but are not limited to: - Develop and maintain embedded...
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